#!/user/bin/python
# -*- coding: utf-8 -*-

import os

L = []
for n in range(1,11):
    L.append(n**2)

M = [n**2 for n in range(1,11) if n % 2 == 0]

N = [m+n for m in 'ABC' for n in 'CBA']

print(L)
print(M)
print(N)

O = [d for d in os.listdir('F:/')]
print(O)
